Let's Make Robots!

The most useless machine ever

This is a "most useless machine" i made. I used a instructable but it was a comment by "compukidmike" that was the schematic i used. 

here is compukidmike's schematic picture thing  http://www.instructables.com/files/deriv/FCQ/XPAC/G43EFYKB/FCQXPACG43EFYKB.SMALL.jpg 

This uses a SPDT switch and a DPDT toggle switch and a servo modified as a gear motor. When the toggle switch is thrown, the servo moves the finger (when the finger leaves it lets go of the SPDT switch so that it can power the circuit after the other switch is hut off), the finger switches the top switch which reverses the servo. Then the finger goes back inside the box where it hits the SPDT switch and stops. The circuit is now off and waiting for you to flip the switch.  

here is the servo i used (has to be modified for the schematic above)   http://www.hobbypartz.com/kahaoubrmo14.html

here is the DPDT switch  http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go〈=en&site=us&keywords=EG2456-ND&x=5&y=11

here is the SPDT switch  http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go〈=en&site=us&keywords=SS-3GL13PT&x=0&y=0

 and here is how to modify a servo  http://www.societyofrobots.com/actuators_modifyservo.shtml

but you will want to remove the circuit of the servo and solder wire straight to the motor. 


Finally my useless machine being useless 

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Haha I've made one of these things. I love it. It drives people crazy at my house. I would like to expand upon the design. Like adding some LEDs or a speaker. Something that makes it more interestingly useless.
yes expanding would be fun... just keep it useless :D
This reminds me of the money box with the skeletal hand that comes out and grabs your coin when you place it. Do you know the one I mean?

I love it! LOL....

It really needs a sign on it saying " Do NOT flip this switch!" Then just leave it laying around somewhere.

I love this! If you dont know what it is and you flip the switch for the first time you must be like "what the hell just happened!?!" 
every one who tries it has no idea what it is doing... i thought it will be obvious  but i guess not.

hehe I made one of these ages ago when I got my first servo to work with my arduino, funny how something useless keeps us busy making it, and intrigues others :D